Coefficient of Conservatism:
Coefficient of Wetness:
Borders of forests and in rock crevices along the Lake Superior shore. A boreal species, which ranges south to northern New England and Lake Superior.
Including Isle Royale
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 15, 2017. http://michiganflora.net/species.aspx?id=913.